No matter how clean you think your carpets are, you could be missing some dirt. The high-powered PreP Marathon Carpet Cleaner was designed to deep clean and remove tough stains from those hidden places no other cleaner can reach. It tackles even the toughest of soils like pet waste, allergens such as pollen and allergens in general (such as dust mites) - all without leaving behind any residues or build-ups that would otherwise continue to irritate sensitive skin and cause respiratory problems. That's why many professionals keep a few cans handy at all times.